A new multicarrier system for satellite based communications in the railway environment

Due to a fast growth of broadband wireless access, a need to research new transmission technologies to keep pace with these demands becomes more significant. There are many ways to achieve high data rate and high quality of service. Since the mobility represents the main concern in modern wireless communications, in this paper we focus on the implementation of a new multicarrier (MC) technique. We propose an MC technique based on the affine Fourier transform (AFT-MC) for transmission in railway satellite (RS) channels. The key strength of the AFT-MC is the resilience to the intercarrier interference caused by the Doppler shift and Doppler spread. The AFT-MC system model is adapted to the RS channel environment and the obtained results prove good transmission performance in terms of interference cancellation, high data rate and spectral efficiency.